Printing press



July 15, 1941. c. A. MEISEL PRINTING PRESS Filed Jan. 3, 1940 2Sheets-Sheet 1 J i1ly 15, 19.41 c. A. M El$ EL PRINTING PRESS 1 3119 1an. 3, 1940 2 Sheets-Sheet. 2

Patented July 15, 1941 UNHTE 7 PRINTING PRESS Charles A. Meisel; Milton,Mass, assignor to Meisel Press ManufacturingCompany, Boston, Mass,acorporation of Massachusetts Application January 3, 1944), Serial No.312,233

9 Claims.- (01; 101 -247) This invention relates to printing presses andthe object is to provide an improved construction therefor whereby theprinting operation may be interrupted with facility but in such mannerthat when work is resumed the quality of the work is not impaired onaccount of the interruption and also to provide an arrangementfacilitating access to the various parts.

My invention will be well understood by reference'to the followingdescription of an illustrative embodiment thereof in the form of aperfecting press of the rotary wet ofiset type illustrated in theaccompanying drawings, wherein Fig. l is a diagram, correspondingto afragmentary side elevation and indicating such essential elements of thepress as are required to be shown to render the subject matter clear tothose skilled in the art; and r Fig. 2 is a similar partial diagramshowing the parts in a different position of adjustmentf In thediagrammatic drawing I have illustrated a single perfecting couple asutilized in a multicouple, multi-color press, the other couples being ofsubstantially similar construction. In th diagram I have shown thevarious cylinders in full lines superposed on outlines of the supportingframework, omitting the details of mechanical construction which may beof anysuitable form and readily supplied by skilled worker's in the art.Various cylinders are geared together at their ends, as will be wellunderstood, and when, as is usually the case, the pitch diameter of agear is the same as the diameter of a cylinder, I have not attempted toshow them separately. Pitch lines of various intermediate gears areindicated by dot and dash lines.

Referring now to Fig. 1 of the drawings, the press here shown is of theweb type and the web of paper P is fed in a vertical plane over suitableguide rolls 5 between a pair of opposed blanket cylinders l with whichcooperate plate cylinders 9, these constituting the printing mechanismproper. The plate cylinders receive ink from laterally disposedfountains I l through ink ing mechanisms organized on sub-frames l3.

Herein these inking mechanisms comprise inking rolls l5 cooperating withthe forms on the plate cylinders 9 and located adjacent the upper endand the inner side of the frames l3. These receive ink through a seriesof alternating vibrator rolls ll, which are transversely reciprocated inWell known manner, and distributing rolls l9. Adjacent the outer andlower end of the frame 13 the ink is delivered to the set of rollsjustreferred to from the fountain ll. Herein a of fountain roll 29.

in Fig. 1 to the full line position of Fig. 2 the inking rolls 15 areseparated from the plate cylinders'9 and the ductor roller 2| so movedthat it does not make contact with the fountain roll 29; thusinterrupting the supply of ink to the form and also preventing thefeeding of surplus ink to the inking mechanism when it is no longerbeing consumed by the printing operation. A

' driven gear on the center 3i, not'illustrated as distribution of theink is concerned.

such in the drawings because its pitch diameter is the same as thediameter of the vibrator .roll

-mounted on the same center, meshes with a gear ing over the ink. Ifprinting is resumed and the frame 13 moved back to the position of Fig.1, the printing operation can go on as if there had been no interruptionin'so far as the quantity and Water may be supplied to the platecylinders '9 by means of water formrolls 35 cooperating with vibratorrolls 31 to which water is supplied by means of the ductor rollers 39swinging on arms 4| to contact alternately the vibrator rolls and waterfountain rolls 43. Any suitable means, not illustrated, may be providedfor interrupting the supply of water to the plate cylinders whendesired. r

The arrangement of the press is such that the subframes I3 carrying theinking mechanism are rocked to the full line position shown in Fig. 2when the blanket cylinders are tripped, Herein the blanket cylinders aremounted on eccentric bearings 45 having arms 4.! tO,Whi-Ch are linked bya wrist pin connection 49 (herein shown as embodying an eccentric forpurposesxof adjustment) links 5| which in the normal position of theparts cross, as shown in Fig. 1, and extend respectively to the furtherside of a rotatable disc 53. The arrangement is such that in theposition of the parts shown in Fig. 1 the radii of the disc extending tothe points of connection of the links 5| therewith are substantiallycoincident or coplanar with the axes of the arms or links 5|. There isthus provided a toggle mechanism which in Fig. 1 is on or slightlybeyond dead center, locking the blanket cylinders in their operativeposition. An operating handle 55 working through a sprocket chain 51serves to turn the disc 53, breaking the toggles to the position shownin Fig. 1 and tripping the cylinders.

To the arm 5| of each toggle is connected a rod 59 acting to turn a disc6| pivoted on the side frame of the machine and having eccentricallymounted thereon (herein by an eccentric connection 63 providing foradjustment) a link or connecting rod 65 having a hooked end 61 engaginga stud n the upper end of the frame l3. Thus when the cylinders aretripped, the connecting rod 85 moves outwardly, moving the frame l3about the center 3| to the full line position of Fig. 2 and separating,as already described, the inking rolls l from the plate cylinder and theductor roll 2| from the fountain roll 29.

If the hook 51 is released, the frame I3 may be swung outwardly to theposition shown in dotted lines in Fig. 2, thereby exposing the rolls atthe inner side thereof, permitting ready access to the same for changingthem or for other work thereon. I have herein shown the lower end of theframe l3 as provided with an arcuate rack or segment H meshing with anormally idle pinion on the main frame of the press. A crank handle maybe fitted to the squared end of the pinion shaft, and when the hookedlink 65 is released, rotation of the pinion will swing the frame l3 toand from the dotted line position of Fig. 2.

I am aware that the invention may be embodied in other specific formswithout departing from the spirit or essential attributes thereof, and Itherefore desire the present embodiment to be considered in all respectsas illustrative and not restrictive; reference being had to the appendedclaims rather than to the foregoing description to indicate the scope ofthe invention.

I claim:

1. In a printing press a printing mechanism proper including a formcylinder, an ink fountain, an intermediate frame including inking rollsto cooperate with the form cylinder, a roll normally receiving ink fromthe fountain and intermediate rolls for working the ink and deliveringit from said roll receiving the same to said inking rolls, means formoving the frame to separate the inking rolls fromthe form and theinkreceiving roll from the fountain, and means for continuously drivingthe rolls on said frame irrespective of the position of the latter.

2. In a printing press a printing mechanism proper including a formcylinder, an ink fountain, an intermediate frame including inking rollsto cooperate with the form cylinder, a roll normally receiving ink fromthe fountain and intermediate rolls for working the ink and deliveringit from said roll receiving the same to said inking rolls, said framebeing pivoted at a point between the inking rolls and the ink-receivingroll, means for swinging the frame about its pivot to separate theinking rolls from the form and the ink-receiving roll from the fountain,and means for continuously driving the rolls on said frame irrespectiveof the position of the latter.

3. In a printing press a printing mechanism proper including a formcylinder, an ink fountain, an intermediate frame including inking rollsto cooperate with the form cylinder, a roll normally receiving ink fromthe fountain and intermediate rolls for working the ink and deliveringit from said roll receiving the same to said inking rolls, the framebeing pivoted between the inking rolls and the ink-receiving rolls inthe manner of a lever of the first class, means including a transmissiongear at the pivotal center for driving the rolls on the frame,reversibly actuable means for rocking the frame to and fro through afixed traverse to separate the inking rolls from the form and theink-receiving roll from the fountain and to return the same intocooperation therewith, said reversibly actuable means being readilydisconnectable from the frame and the frame being then free to be swungfurther to facilitate access to the part carried thereby.

4. In a printing press a printing mechanism proper including a formcylinder, an ink fountain, an intermediate frame including inking rollsto cooperate with the form cylinder, a roll normally receiving ink fromthe fountain and intermediate rolls for working the ink and deliveringit from said roll receiving the same to said inking rolls, means fortripping the impression, a train interposed between said tripping meansand the frame effective when the impression is tripped to move the frameto separate the inking rolls from the form and the ink-receiving rollfrom the fountain, and means for continuously driving the rolls on saidframe irrespective of the position of the latter.

5. In a printing press a printing mechanism proper including a formcylinder, an ink fountain, an intermediate frame including inking rollsto cooperate with the form cylinder, a roll normally receiving ink fromthe fountain and intermediate rolls for working the ink and deliveringit from said roll receiving the same to said inking rolls, reversiblyactuable means for moving the frame (through a fixed traverse toseparate the in king rolls from the form and the inkreceiving roll fromthe fountain and to return the same into cooperation therewith, andmeans for continuously driving the rolls on the frame irrespective ofthe position of the latter, said reversibly actuable means being readilydisconnectable from the frame and the frame then being free to be movedfurther from the cooperating parts to facilitate access to the partscarried thereby.

6. In a rotary printing press a printing mechanism proper and an inkingmechanism therefor comprising inking rolls for cooperation with a formincorporated in said printing mechanism, said inking mechanism beingmounted on a movable frame to permit the inking rolls to be separatedfrom the form, said printing mechanism including a cylinder for directcontact with the paper mounted on movable bearings, a toggle mechanismcooperating with the bearings to trip the impression when the toggle isbroken, a link extending from the arm of the toggle, and means actuatedby the link for moving the frame to separate the inking rolls from theform when the impression is tripped.

'7. In a rotary printing press a printing mechanism proper and an inkingmechanism therefor comprising inking rolls for cooperation with a formincorporated in said printing mechanism, said inking mechanism beingmounted on a movable frame to permit the inking rolls to be separatedfrom the form, said printing mechanism including a, cylinder for directcontact with the paper mounted on eccentric bearings, a train for movingthe bearings including a leverand a toggle which when broken serves totrip the impression, and means directly connected to the elements ofsaid train for moving the frame to separate the inking rolls from theform when the impression is tripped.

8. In a perfecting press a pair of opposed printing cylinders forprinting on opposite sides of the paper, eccentrically mounted bearingsfor the cylinders, arms extending from the bearings, links connected tothe arm, a single crank disc to which the arms are connected in suchmanner that when the cylinders are in printing position the radii ofsaid disc through the points of connection of said arms substantiallycoincide with the axes of the arms respectively, and means for turningthe disc.

9. In a perfecting press a pair of opposed printing cylinders forprinting on opposite sides of the paper, eccentrically mounted bearingsfor the cylinders, arms extending from the bearings, links connected tothe arm, a single crank disc to which the arms are connected in suchmanner that when the cylinders are in printing position the radii ofsaid disc through the points of connection of said arms substantiallycoincide with the axes of the arms respectively, and means for turningthe disc, laterally disposed, movably mounted frames carrying inkingrolls,

and means directly connected to the above described train which actuatessaid bearings for moving the frame to separate the inking rolls from theform when the impression is tripped.

CHARLES A. ME'ISEL.

